GRDA Floodwater release bulletin

At 10 AM on Monday, March 24:

• Grand Lake elevation was 749.15 feet.
• Grand Lake flood control pool was at 38.8 percent capacity.
• At the direction of the United States Army Corps of Engineers, seven (7) floodgates were open at Pensacola Dam, discharging 25,130 cubic feet per second (cfs) of water.
• Six (6) units were online at the Pensacola Dam powerhouse, releasing 14,058 cfs of water through generation.
• Releases through floodgates and generation totaled 39,188 cfs.
• Inflows into Grand Lake totaled 16,786 cfs.

• Lake Hudson elevation was 628.29 feet.
• Lake Hudson’s flood control pool was at 47.75 percent capacity.
• At the direction of the United States Army Corps of Engineers, two (2) floodgates were open at Robert S. Kerr Dam, discharging 42,305 cfs.
• Two (2) units were online at Robert S. Kerr Dam powerhouse, releasing 14,580 cfs of water through generation.
• Releases through floodgates and generation totaled 56,885 cfs.
• Inflows into Lake Hudson totaled 41,219 cfs.

Grand Lake's elevation has been falling since a crest of 751.92 feet on Friday, March 21. Lake Hudson's elevation has been falling since a crest of 631 feet on Saturday, March 22.

The Grand River watershed consists of approximately 12,000 square miles of runoff in parts of Kansas, Missouri and Oklahoma. Of that total, over half—7,000 square miles—is uncontrolled runoff, meaning there is no reservoir to control it above the Pensacola Dam. However, the remaining 5,000 square miles of runoff passes through the John Redmond Dam, located near Burlington, Kansas, prior to reaching the Grand River system in Oklahoma.